Answered
Gas accumulator initial pressure
The volume in the initial condition (Variables tab) is supposed to be the volume of the liquid. Not sure about R2013a, but in m...

3 years ago | 0

Answered
ERROR Pressure fell below zero SimHydraulic
Pressure below zero error occurs most likely when the liquid is pulled through an orifice/resistance/pipe/valve or forced to exp...

3 years ago | 0

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How to make assembly between induction motor,centrifugal pump and open/close valve for tank in simulink. Please guide to work out my query
There are a few blocks in Simscape Fluids that you can use to model the tank https://www.mathworks.com/help/physmod/hydro/ref/t...

3 years ago | 0

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How can I get the Parameters for Contact stiffness and contact damping
Not sure about the RIGHT way to do this, but here is my two-step approach: 1. set a reasonable stiffness: set up the model to a...

3 years ago | 0

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HOW could I add a tilt actuator in Simulink project.
This can be best handled by using Simscape Multibody and Simscape Fluids together. Some examples in the documentation: https:/...

3 years ago | 0

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Why the dry air enthalpy in simscape perfect gas model is 420 ? It should be 293
I believe it depends on where 0 kJ/kg specific enthalpy is defined. In Simscape, looks like it's defined such that at 0K, h=0...

3 years ago | 0

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Answered
Modelling a Pressure Reducing Valve
If you have access to Simscape Fluids add-on library, a pressure reducing valve block is available in the Hydraulic domain since...

3 years ago | 0

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How can I simulate a Hydropnuematic suspension using simulink if the piston has a fixed orifice???
Something like this should work. Parameters and initial conditions will also be critical for the model to generate reasonable r...

3 years ago | 0

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hydraulic pressure sensor and hydraulic flow rate sensors dont' work when used together
I suspect that you connected the sensors in series ... A pressure sensor is a sensor for an "across variable", so it's always m...

3 years ago | 0

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Two-Phase Steam Flow Control
9+ years after the question was asked: It sounds like this application can be best handled using the two-phase fluid domain, wh...

3 years ago | 0

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why have i this error: "Number of equations exceeds number of variables."
10 years after when the question was asked ... the thermal liquid domain should be able to handle the thermal+hydraulic applicat...

3 years ago | 0

Answered
how to design hydraulic actuator for suspension system?
Attempt to answer from 10 years later .... lol I suggest you use Simscape Multibody to model the mechanical part of the suspens...

3 years ago | 0

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Demos of SimHydraulics on Matlab R2010a
Try this page for documentations in different versions: https://www.mathworks.com/help/doc-archives.html Then navigate to the r...

3 years ago | 0

Answered
Simulation of Cooling Towers using Matlab
A quick answer is yes. The main challenge I think is the find a correlation that works for YOUR cooling tower. The info in the ...

3 years ago | 0

Answered
Solenoid Valves Controlled With Simhydraulics
Thoughts on a few issues you may encounter building such a model and how to resolve them: 1. model the air bag. The volume and...

3 years ago | 0

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Can I simulate this simple rod pump in SimHydraulics?
In its simplest form, I think a rod pump can be conceptualized as a single-acting cylinder with two check valves. One check val...

3 years ago | 0

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How to get RC circuit parameter for equivalent circuit diagram from measurement Graph?
Simscape user here. So first, I would build the thermal network using the thermal domain. It's just a few thermal resistance a...

4 years ago | 2

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Answered
co-simulation within Simulink
It sounds to me that the easiest way is to set up two Simulink simulations. Save the output from the 1st one to the MATLAB work...

4 years ago | 1

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Missing something in Simscape.
The force sensor is a sensor for "through variable", so you'll need to connect in series with the element on which you'd like to...

4 years ago | 0

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How can solve this error: Output 'Taout' declared with unit expression that contains an affine unit: 'degC'. Affine units are not allowed when declaring members of this type.
Declare temperatue units in K. That's what the error message is saying. The numerical value of the temperature may be overridd...

4 years ago | 0

Answered
Ideal Check Valve (Thermal Liquid, Simscape)
Hi Mash, Having a check value (or any closed valve) with absolutely zero leakage is in general a bad idea. It basically change...

4 years ago | 1

Answered
I'm not getting an expected temperature/pressure output from cooling a 600 [F] copper object [FEEDBACK REQUEST]
Looks like the convective coefficient was too small. Also, since the pipe has a wall model for heat transfer, you may not need ...

4 years ago | 0

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Answered
What does "delta_vel_pos_AI" in Pipe (G) means?
Hi PY, The term is using a trick to avoid using the abs() function, which may otherwise trigger frequent zero-crossing when mdo...

4 years ago | 0

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Answered
Is this an appropriate way to model the pressure/temperature drop across an elbow joint? Critiques requested
Hi AJ, There is a custom block for an elbow in thermal liquid domain that I can share. Could you please submit a Technical Sup...

4 years ago | 0

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Answered
simscape block node arrangement
Don't know much about IGBT but this seems to be Simscape language syntax. After the "subcircuit2ssc" function, an object for ss...

4 years ago | 0

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Answered
Trying to export .slx and its associated files to allow me to work from a faster PC.
In each of the file solid blocks, the path to the .step file is usually absolute. That full path can be different when you move...

4 years ago | 0

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How to compile a simscape model (to dll) with tunable parameters?
Hi Bruno, Try this: make the parameter you want to tune in the generated code a "Simulink variable", i.e. a variable in the Sim...

4 years ago | 0

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Model contact forces in custom designed CAD using File Solid?
One possibility is adding "point cloud" to better model the contact: https://www.mathworks.com/help/physmod/sm/ref/pointcloud.ht...

4 years ago | 0

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How can I consider the changing temperature of a copper object that is being cooled by coiling a pipe around the outside surface?
The heat transfer between solid objects are best represented by conductive components and thermal mass. I suspect the thermal m...

4 years ago | 1

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Answered
Modell bearing losses of a compressor-turbine shaft in Simscape
I wonder how is the operating points defined. If you have the shaft speed at these points, it's then possible to find the frict...

4 years ago | 0